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Mass Transfer

Mass Transfer
When the temperature and humidity of air is low, we usually use __________ draft cooling tower.

None of these
Natural
Induced
Forced

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Mass Transfer
At what percentage (by volume) of alcohol composition, it forms an azeotrope with water?

95
99
91.5
90

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Mass Transfer
Binary distillation involves the mass transfer by __________ at the gas-liquid interface.

Either A or B
Unidirectional diffusion from liquid to gas phase
A counter diffusion at an almost equal molar rate
Unidirectional diffusion from gas to liquid phase

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Mass Transfer
Small dia distillation column can be a

Packed column
Sieve tray
Bubble cap
Any of these

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Mass Transfer
The minimum number of theoretical plates is required for achieving a given separation in distillation column with

Zero reflux ratio
No reflux
Minimum reflux ratio
Total reflux

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Mass Transfer
Which of the following adsorbant is used in the refinning of sugar?

Wood charcoal
Bone charcoal
Activated clay
Silica gel

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